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Date: Mon, 1 Mar 2010 09:19:15 -0600 (CST)
From: Christoph Lameter <cl@linux-foundation.org>
To: Mel Gorman <mel@csn.ul.ie>
Subject: Re: [PATCH] powerpc: Set a smaller value for RECLAIM_DISTANCE to
	enable zone reclaim
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On Mon, 1 Mar 2010, Mel Gorman wrote:

> Christoph, how feasible would it be to allow parallel reclaimers in
> __zone_reclaim() that back off at a rate depending on the number of
> reclaimers?

Not too hard. Zone locking is there but there may be a lot of bouncing
cachelines if you run it concurrently.